EP 2524101 A1 20121121 - BEARING CONTACT PRESSURE REDUCTION IN WELL TOOLS
Title (en)
BEARING CONTACT PRESSURE REDUCTION IN WELL TOOLS
Title (de)
LAGERKONTAKT-DRUCKREDUZIERUNG IN BOHRLOCHWERKZEUGEN
Title (fr)
RÉDUCTION DE PRESSION DE CONTACT ENTRE PALIERS DANS DES OUTILS DE PUITS
Publication
Application
Priority
- US 68582110 A 20100112
- US 2011025430 W 20110218
Abstract (en)
[origin: US2011168407A1] A method of reducing contact pressure between bearing surfaces of a well tool can include constructing a structure which supports one bearing surface in contact with the other bearing surface, and reducing contact pressure between the bearing surfaces by relieving strain energy in the structure. A well tool can include one bearing surface which contacts another bearing surface. There is a transition between contact and lack of contact between the bearing surfaces. A structure supporting one of the bearing surfaces can have a reduced stiffness, whereby a contact pressure between the bearing surfaces is reduced at the transition. The bearing surfaces can be formed on a thrust bearing, plain bearing, or other type of bearing between components of the well tool.
IPC 8 full level
E21B 7/08 (2006.01); E21B 47/024 (2006.01)
CPC (source: EP US)
E21B 4/003 (2013.01 - EP US); E21B 10/22 (2013.01 - EP US); F16C 39/00 (2013.01 - EP US); F16C 2352/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2011088478A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2011168407 A1 20110714; US 8459379 B2 20130611; AU 2011205612 A1 20120621; BR 112012016646 A2 20170328; EP 2524101 A1 20121121; MX 2012007564 A 20160204; WO 2011088478 A1 20110721
DOCDB simple family (application)
US 68582110 A 20100112; AU 2011205612 A 20110218; BR 112012016646 A 20110218; EP 11733547 A 20110218; MX 2012007564 A 20110218; US 2011025430 W 20110218